What fuses power the rear defogger circuit?

Two 15A fuses in the fuse box: fuse position 21 feeds the rear defogger switch, and fuse position 13 feeds the lighting switch for illumination.

What wire color carries power from the rear defogger switch to the defogger grid?

Red/White (R/W), running through connectors G02/L02, L16/M07 (pin 9), and M03/O01 to the rear defogger element.

How does the defogger switch illumination get power?

Through the lighting switch (TAIL position) via a Red/Yellow (R/Y) wire through connector E38/G05, with brightness handled by the illumination controller connected at G07.

Where does the rear defogger grid ground?

The grid grounds through a Black (B) wire to ground point 12; the switch and illumination controller circuits ground through connector G06/E37 pin 7 to ground points 9 and 10.

What do the numbered legend boxes on the diagram mean?

They indicate build variants: [1] 2-door CAMI, [2] 2-door IWATA and 4-door, [3] IWATA, [4] CAMI: different connector pins apply depending on the variant.

Home/ Registry/ Suzuki/ Samurai/ 1986-1995/ “Little Blue”/ Photo supermotors.net/registry/media/420648

Suzuki Samurai Rear Defogger Wiring Diagram - Defroster Switch & Fuse Circuit

Rear defogger and lighting wiring diagram with defogger switch and illumination controller

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Factory wiring diagram of the rear defogger circuit, defogger switch, lighting switch and illumination controller with wire color codes.

Part of 1986-1995 Suzuki Samurai Wiring Diagrams

AI caption August 2006 · Photo 17 of 86

This document is a wiring diagram for the rear window defogger (defroster) circuit, apparently from a Suzuki factory service manual. Power is supplied through two 15A fuses in the fuse box (positions 21 and 13). Fuse 21 feeds the rear defogger switch via a Yellow/Green (Y/G) wire through connector E37/G06 pin 17 and connector G08 pin 2. The rear defogger switch contains an OFF/ON contact plus an indicator (IND) lamp and illumination (ILL) lamp. The switched output leaves on a Red/White (R/W) wire through connectors G02/L02 (pin 15 or 14 depending on body style), L16/M07 pin 9, and M03/O01 (pin 2 or 1 depending on assembly plant) to the rear defogger grid (connectors O10 and O05), which grounds through a Black (B) wire at ground point 12. Fuse 13 feeds the lighting switch (connector E40 pin 10, White wire); its TAIL output (Red/Yellow, via E38/G05) provides dash illumination, routed through an illumination controller (connector G07) that dims the switch's ILL lamp. Grounds return through G06/E37 pin 7 to ground points 9 and 10. A legend distinguishes variants: 2-door CAMI-built, 2-door IWATA-built, 4-door, IWATA, and CAMI assembly plants.

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Frequently asked questions

What fuses power the rear defogger circuit?: Two 15A fuses in the fuse box: fuse position 21 feeds the rear defogger switch, and fuse position 13 feeds the lighting switch for illumination.
What wire color carries power from the rear defogger switch to the defogger grid?: Red/White (R/W), running through connectors G02/L02, L16/M07 (pin 9), and M03/O01 to the rear defogger element.
How does the defogger switch illumination get power?: Through the lighting switch (TAIL position) via a Red/Yellow (R/Y) wire through connector E38/G05, with brightness handled by the illumination controller connected at G07.
Where does the rear defogger grid ground?: The grid grounds through a Black (B) wire to ground point 12; the switch and illumination controller circuits ground through connector G06/E37 pin 7 to ground points 9 and 10.
What do the numbered legend boxes on the diagram mean?: They indicate build variants: [1] 2-door CAMI, [2] 2-door IWATA and 4-door, [3] IWATA, [4] CAMI: different connector pins apply depending on the variant.